| Operating system version | 4.3 |
| Number of screws | 14 |
| Weight | 12.4 lbs |
| Width | 10.4" |
| Depth | 11" |
| Height | 7.41" |
| Type | NAS |
| Display Type | LCD |
| Quick installation guide | Y |
| Supported storage drive interfaces | Serial ATA III |
| Supported file systems | FAT32, HFS+, NTFS, exFAT, ext3, ext4 |
| Cable lock slot | Y |
| Cable lock slot type | Kensington |
| Number of built-in speakers | 2 |
| Browser supported | Apple Safari 7, Google Chrome, Microsoft Internet Explorer 10, Mozilla Firefox |
| HDMI version | 1.4b |
| Device class | Home & Home Office |
| Maximum RAM supported | 64 GB |
| PCI Express x4 (Gen 3.x) slots | 2 |
| Wake-on-LAN ready | Y |
| Universal Plug and Play (UPnP) | Y |
| Access Control List (ACL) | Y |
| Buzzer | Y |
| Multilingual support | Y |
| Online RAID migration | Y |
| Online RAID expansion | Y |
| Dynamic DNS (DDNS) | Y |
| Backup button | Y |
| Number of M.2 (M & B) slots | 2 |
| Fan diameter 2 | 2.36" |
| Product color | Gold |
| Ethernet LAN (RJ-45) ports | 4 |
| HDMI ports quantity | 2 |
| USB port | Y |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 4 |
| 3.5 mm (1/8-inch) out | Y |
| Microphone in | Y |
| Built-in display | Y |
| Chassis type | Tower |
| Operating temperature (T-T) | 0 - 40 °C |
| Operating relative humidity (H-H) | 5 - 95 % |
| AC input frequency | 50 - 60 Hz |
| AC input voltage | 100 - 240 V |
| Power supply unit (PSU) capacity | 250 W |
| Power supply location | Built-in |
| Internal memory | 4 GB |
| Internal memory type | DDR4 |
| Number of fans | 3 fan(s) |
| Cooling type | Active |
| On/off switch | Y |
| Linux operating systems supported | Y |
| Built-in speaker(s) | Y |
| Cables included | AC, LAN (RJ-45) |
| Fan diameter | 3.54" |
| Ethernet LAN | Y |
| Backup function | Y |
| Backup features | Cloud, iSCSI LUN |
| Processor frequency | 2.1 GHz |
| RAID support | Y |
| RAID levels | 0, 1, 5, 6, 10, JBOD |
| Storage drives installed | N |
| Installed storage drive type | N |
| Supported storage drive types | HDD & SSD |
| Hot-swap drive bays | Y |
| Number of storage drives supported | 6 |
| Storage drive sizes supported | 2.5,3.5" |
| Ethernet LAN data rates | 10,100,1000 Mbit/s |
| Wi-Fi | N |
| Jumbo frames support | Y |
| DHCP client | Y |
| iSCSI support | Y |
| DHCP server | Y |
| Windows operating systems supported | Windows 10, Windows 7, Windows 8 |
| Mac operating systems supported | Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Mavericks |
| Memory slots | 4 x SO-DIMM DDR4 |
| Flash memory | 512 MB |
| Processor family | AMD Embedded R-Series SoC |
| Processor model | RX-421BD |
| Processor cores | 4 |
| Server operating systems supported | Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016 |
| Operating system installed | QNAP Turbo System |
| Security algorithms | 256-bit AES, HTTPS, SNMP, SSH, SSL/TLS |